Unterschiede

Hier werden die Unterschiede zwischen zwei Versionen angezeigt.

--- filesystem [2024/12/18 16:54] – schwan
+++ filesystem [2025/12/05 13:54] (aktuell) – [archive directory] schwan
@@ Zeile 1: / Zeile 1: @@
 ==== home directory ====
   * The home directory is located at ''/home/your_login_name''
+  * The home directory is a "per user" directory
   * The home dir has a maximum size of **200 Gigabyte** and a file number limit of **2 mio files**.
-  * The home is excluded from backup service but has a snapshot over the **last 14 days**.
+  * The home is excluded from backup service but has a snapshot over the **last 14 days**.\\ The snapshot data are located at ''$HOME/.snapshot''
-  * The snapshot data are located at ''$HOME/.snapshot''
+  * The home dir is available (read & write) on all CPU-, GPU- and interactive node.
-  * The home dir is available on all CPU-, GPU- and interactive node.
 Please use Your home dir only for basic work - not for saving huge amount of data!\\
@@ Zeile 11: / Zeile 11: @@
 ==== scratch directory ====
   * The scratch directory is located at ''/scratch/your_login_name''
-  * The scratch dir has a maximum size of **2 Terabyte** and a file number limit of **2 mio files**.
+  * The scratch directory is a "per user" directory.
+  * The sratch directory is only designed for temporary job data.
+  * The scratch dir has a maximum size of **5 Terabyte** and a file number limit of **2 mio files**.
   * The scratch dir is NOT included in a backup!
-  * The scratch dir is available on all CPU-, GPU- and interactive node.
+  * The scratch dir is available (read & write) on all CPU-, GPU- and interactive node.
 Please use Your scratch dir for Your data generated during job runtime and pre/post processing.\\
 Dont use this scratch dir for long term storage of any data!\\
 This scratch dir is designed for high [[https://en.wikipedia.org/wiki/IOPS|IOPS]] performance
+==== data exchange directory ====
+  * the exchange directory is located at ''/scratch/aaa_exchange/''
+  * it is only designed for data exchange of different users
+  * the data exchange directory is NOT included in the backup
+  * the data exchange directory is not designed for long tern storage
+  * all data (files & directories) will be removed **40 days after generation**
+==== project (group) directory ====
+  * The project directory is located at ''/groups/your_group_name''
+  * The project directory is a "per group" directory
+  * The project directory has a maximum size of **1 Terabyte** and a file number limit of **1 mio files**.
+  * The project directory is NOT included in a backup!
+  * The project directory is available \\ a) readonly on all CPU- and GPU- nodes \\ and \\ b) read/writable on Login- and interactive nodes.
+  * The project directory is designed for collaboration purposes for a research group or subdepartment - not for data exchange
+  * for exchange of data please use the **data exchange directory**
 ==== archive directory ====
   * The archive directory  is located at ''/data2/hpcuser/your_login_name''
-  * The archive dir has a default size of **100 Gigabyte** and a file number limit of **200.000 files**.
+  * The archiv directory is a "per user" directory
+  * The archive dir has a default size of **100 Gigabyte** and a file number limit of **200.000 files** - please contact [[hpc@tu-ilmenau.de]] for higher limits
   * The archive dir is included in the central backup (weekly incremental)!
-  * The archive dir is available only at the **transfer nodes**.
+  * The archive dir is available (read & write) only at the **transfer nodes**!
 Please use Your archive dir for saving representative data weekly or monthly.\\